Fig. 1From: The effect of a strict facial-mask policy on the spread of COVID-19 in Switzerland during the early phase of the pandemicTime series of the two response variables, the estimated effective reproductive number \(R_{i,t}\), and the approximate weekly growth rate in supposed new infections from week \(t-1\) to week t, \(G_{i, t+2}\), between July 6, 2020, and December 20, 2020, for each of the 26 cantons. For each canton, we report the Pearson correlation coefficient \(\rho\) between the two time seriesBack to article page